possible reason for merge not working
What you "see" and what the data really is may be two different things. You should have at least enclosed an 'str' of the two data frames; even better would be a subset of the data using 'dput'. Most likely your problem is that your data is not what you 'expect' it to be.
On Mon, Aug 1, 2011 at 12:17 PM, world peace <buysellrentoffer at gmail.com> wrote:
Hi Guys, working on a "merge" for 2 data frames. Using the command: x <- merge(annotatedData, UCSCgenes, by.x="names", by.y="Ensembl.Gene.ID", all.x=TRUE) names and Ensembl.Gene.ID are columns with similar elements from the x and y data frames. annotatedData has 8909 entries, so has x(as expected). x has columns for UCSCgenes, but there is no data in them, all n/a, as if no match exists. This is not true as I can manually see and find many similarities between the names and UCSCgenes columns. I am wondering if there is any syntax error, or logical. comments appreciated. Thanks Dan
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Jim Holtman Data Munger Guru What is the problem that you are trying to solve?